Cleanup unmaintained ports in the misc category:
- Trim Header
- Convert to OptionsNG
- Prefer DISTNAME to DISTFILES
- Reorder variables
- Fix comments (don't include leading article)
- @unexec rm must not cause failure
- Tabs, not spaces
- Single space for WWW
- Pet portlint
- etc.
In a few cases the option DOCS was used to control installation into EXAMPLEDIR.
I opted to keep the existing logic of the port in these cases.
Reviewed by: koobs, ashish